No connection by SFP

[beken.sargulov]

He everyone

I have two Cisco 2960-l and 2 SFPs GLC-BX-U

I inserted SFPs and there switches can see SFP but status is notconnect 

here is some Information from both switches 

---

show interface gigabitEthernet 0/10

GigabitEthernet0/10 is down, line protocol is down (notconnect) 

  Hardware is Gigabit Ethernet, address is 0072.7867.bd8a (bia 0072.7867.bd8a)

  MTU 1500 bytes, BW 10000 Kbit/sec, DLY 1000 usec, 

     reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation ARPA, loopback not set

  Keepalive not set

  Auto-duplex, Auto-speed, link type is auto, media type is 1000BaseBX10-U SFP

  input flow-control is off, output flow-control is unsupported 

  ARP type: ARPA, ARP Timeout 04:00:00

  Last input never, output never, output hang never

  Last clearing of "show interface" counters never

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

  Queueing strategy: fifo

  Output queue: 0/40 (size/max)

  5 minute input rate 0 bits/sec, 0 packets/sec

  5 minute output rate 0 bits/sec, 0 packets/sec

     0 packets input, 0 bytes, 0 no buffer

     Received 0 broadcasts (0 multicasts)

     0 runts, 0 giants, 0 throttles 

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

     0 watchdog, 0 multicast, 0 pause input

     0 input packets with dribble condition detected

     0 packets output, 0 bytes, 0 underruns

     0 output errors, 0 collisions, 1 interface resets

     0 unknown protocol drops

     0 babbles, 0 late collision, 0 deferred

     0 lost carrier, 0 no carrier, 0 pause output

     0 output buffer failures, 0 output buffers swapped out

---

show interface gigabitEthernet 0/10

GigabitEthernet0/10 is down, line protocol is down (notconnect) 

  Hardware is Gigabit Ethernet, address is 0077.8dee.3e0a (bia 0077.8dee.3e0a)

  Description: ss

  MTU 1500 bytes, BW 10000 Kbit/sec, DLY 1000 usec, 

     reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation ARPA, loopback not set

  Keepalive not set

  Auto-duplex, Auto-speed, link type is auto, media type is 1000BaseBX10-U SFP

  input flow-control is off, output flow-control is unsupported 

  ARP type: ARPA, ARP Timeout 04:00:00

  Last input never, output never, output hang never

  Last clearing of "show interface" counters never

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

  Queueing strategy: fifo

  Output queue: 0/40 (size/max)

  5 minute input rate 0 bits/sec, 0 packets/sec

  5 minute output rate 0 bits/sec, 0 packets/sec

     0 packets input, 0 bytes, 0 no buffer

     Received 0 broadcasts (0 multicasts)

     0 runts, 0 giants, 0 throttles 

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

     0 watchdog, 0 multicast, 0 pause input

     0 input packets with dribble condition detected

     0 packets output, 0 bytes, 0 underruns

     0 output errors, 0 collisions, 3 interface resets

     0 unknown protocol drops

     0 babbles, 0 late collision, 0 deferred

     0 lost carrier, 0 no carrier, 0 pause output

     0 output buffer failures, 0 output buffers swapped out

---

show inventory 

NAME: "1", DESCR: "WS-C2960L-8PS-LL"

PID: WS-C2960L-8PS-LL  , VID: V01  , SN: FCW2304A45G

NAME: "GigabitEthernet0/10", DESCR: "1000BaseBX10-U SFP"

PID: GLC-BX-U            , VID: V03  , SN: ACW242218W6 

---

show inventory 

NAME: "1", DESCR: "WS-C2960L-8PS-LL"

PID: WS-C2960L-8PS-LL  , VID: V01  , SN: FCW2204A0HB

NAME: "GigabitEthernet0/10", DESCR: "1000BaseBX10-U SFP"

PID: GLC-BX-U            , VID: V03  , SN: ACW242218L8  

---

Switch Ports Model                     SW Version            SW Image                 

------ ----- -----                     ----------            ----------               

*    1 10    WS-C2960L-8PS-LL          15.2(7)E5             C2960L-UNIVERSALK9-M   

Switch Ports Model                     SW Version            SW Image                 

------ ----- -----                     ----------            ----------               

*    1 10    WS-C2960L-8PS-LL          15.2(7)E5             C2960L-UNIVERSALK9-M   

Could you please help to solve this issue.

[Leo Laohoo]

What patch cable are you using? 

If the SFP are looped to each other, does the link go UP?

NOTE:  Put one SFP port 9 and another into port 10, does the link go UP?

[beken.sargulov]

Hi Leo

Thanks for your prompt reply

Im using LC2LC SM cable, also i have tried MM cable but no success

Yes, still no connect between SFPs

I have tried different ports and no connection

[Georg Pauwen]

Hello,

in the older IOS versions, the hidden global command:

service unsupported-transceiver

used to be around, and that would sometimes help, you might want to try and check if that command is available on your switch(es)...

[beken.sargulov]

Hi

This command not available on current firmware version

This is a Cisco SFP and must work with this switches 

show interfaces transceiver supported-list 

Transceiver Type           Cisco p/n min version  

                               supporting DOM     

------------------       -------------------------

   CWDM_SFP                 ALL                      

   SX_SFP                   SOME                     

   ZX_SFP                   SOME                     

   GigE BX U SFP            ALL                      

   GigE BX D SFP            ALL                      

   EX SFP                   ALL                      

   GLC TE                   NONE                     

   GLC LH SMD               ALL  

[Georg Pauwen]

Hello,

it is/was a hidden command, which means it is not visible; you type it in end hit <ENTER>...

But chances are that it is deprecated in your IOS version...

[beken.sargulov]

Thanks Georg

Yes, i have already tried type this command, but it's deprecated in current IOS version

[Leo Laohoo]

Move those optics to a different switch and try the same exercise. 

One of those optics is dead.

[beken.sargulov]

i have a 4pc new SFP modules, and I've tried all of them, with different cables. All SPFs are show in sh inv with their name, serial number and other informations

[Leo Laohoo]

Find a different model of switch and try the same exercise.  I am trying to find a way to identify where the problem is: 

1. Optics not supported (contrary to TMX matrix)
2. Faulty optics
3. Faulty fibre patch cable

Get an OTDR to test the optics and patch cable(s).

[paul driver]

Hello

Have you tried flipping the fibre terminations?

[beken.sargulov]

Hi

Yep, i have tried it

[Ranjita]

Hi,

Do we have a solution to the issue?
I am facing the same problem on Industrial Switch IE400 Series.Could anyone please help me fix it?